refactored: using_tabs example

using_tabs/lib/main.dart

@@ -1,8 +1,7 @@
 import 'package:flutter/material.dart';
-
-import './FirstTab.dart' as first_tab;
-import './SecondTab.dart' as second_tab;
-import './ThirdTab.dart' as third_tab;
+import 'package:using_tabs/tabs/first.dart';
+import 'package:using_tabs/tabs/second.dart';
+import 'package:using_tabs/tabs/third.dart';
 
 void main() {
   runApp(new MaterialApp(
@@ -19,6 +18,9 @@ class MyHome extends StatefulWidget {
 
 // SingleTickerProviderStateMixin is used for animation
 class MyHomeState extends State<MyHome> with SingleTickerProviderStateMixin {
+  /*
+   *-------------------- Setup Tabs ------------------*
+   */
   // Create a tab controller
   TabController controller;
 
@@ -27,7 +29,7 @@ class MyHomeState extends State<MyHome> with SingleTickerProviderStateMixin {
     super.initState();
 
     // Initialize the Tab Controller
-    controller = new TabController(length: 3, vsync: this);
+    controller = new TabController(length: 2, vsync: this);
   }
 
   @override
@@ -37,17 +39,8 @@ class MyHomeState extends State<MyHome> with SingleTickerProviderStateMixin {
     super.dispose();
   }
 
-  @override
-  Widget build(BuildContext context) {
-    return new Scaffold(
-        // Appbar
-        appBar: new AppBar(
-          // Title
-          title: new Text("Using Tabs"),
-          // Set the background color of the App Bar
-          backgroundColor: Colors.blue,
-          // Set the bottom property of the Appbar to include a Tab Bar
-          bottom: new TabBar(
+  TabBar getTabBar() {
+    return new TabBar(
       tabs: <Tab>[
         new Tab(
           // set icon to the tab
@@ -62,18 +55,33 @@ class MyHomeState extends State<MyHome> with SingleTickerProviderStateMixin {
       ],
       // setup the controller
       controller: controller,
-          ),
-        ),
-        // Set the TabBar view as the body of the Scaffold
-        body: new TabBarView(
+    );
+  }
+
+  TabBarView getTabBarView(var tabs) {
+    return new TabBarView(
       // Add tabs as widgets
-          children: <Widget>[
-            new first_tab.First(),
-            new second_tab.Second(),
-            new third_tab.Third()
-          ],
+      children: tabs,
       // set the controller
       controller: controller,
-        ));
+    );
+  }
+
+  /*
+   *-------------------- Setup the page by setting up tabs in the body ------------------*
+   */
+  @override
+  Widget build(BuildContext context) {
+    return new Scaffold(
+        // Appbar
+        appBar: new AppBar(
+            // Title
+            title: new Text("Using Tabs"),
+            // Set the background color of the App Bar
+            backgroundColor: Colors.blue,
+            // Set the bottom property of the Appbar to include a Tab Bar
+            bottom: getTabBar()),
+        // Set the TabBar view as the body of the Scaffold
+        body: getTabBarView(<Widget>[new First(), new Second(), new Third()]));
   }
 }